CVE-2026-63935 (GCVE-0-2026-63935)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:55 – Updated: 2026-07-19 14:55
VLAI
Title
iio: adc: nxp-sar-adc: fix division by zero in write_raw
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: adc: nxp-sar-adc: fix division by zero in write_raw Add a validation check for the sampling frequency value before using it as a divisor. A user writing zero or a negative value to the sampling_frequency sysfs attribute triggers a division by zero in the kernel. Also prevent unsigned integer underflow when the computed cycle count is smaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to a huge value.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4434072a893e4864519c167947083ff3e4cc2d95 , < cb6ea15e7d3c7518f806975a06b7d4c0a26402ea (git)
Affected: 4434072a893e4864519c167947083ff3e4cc2d95 , < a9aba21a539c668a66b58eeb08ad3909e5a54c2a (git)
Create a notification for this product.
Linux Linux Affected: 7.0
Unaffected: 0 , < 7.0 (semver)
Unaffected: 7.0.12 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/adc/nxp-sar-adc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cb6ea15e7d3c7518f806975a06b7d4c0a26402ea",
              "status": "affected",
              "version": "4434072a893e4864519c167947083ff3e4cc2d95",
              "versionType": "git"
            },
            {
              "lessThan": "a9aba21a539c668a66b58eeb08ad3909e5a54c2a",
              "status": "affected",
              "version": "4434072a893e4864519c167947083ff3e4cc2d95",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/adc/nxp-sar-adc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "lessThan": "7.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.12",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: nxp-sar-adc: fix division by zero in write_raw\n\nAdd a validation check for the sampling frequency value before using it\nas a divisor. A user writing zero or a negative value to the\nsampling_frequency sysfs attribute triggers a division by zero in the\nkernel.\n\nAlso prevent unsigned integer underflow when the computed cycle count is\nsmaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to\na huge value."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:55:33.321Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cb6ea15e7d3c7518f806975a06b7d4c0a26402ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9aba21a539c668a66b58eeb08ad3909e5a54c2a"
        }
      ],
      "title": "iio: adc: nxp-sar-adc: fix division by zero in write_raw",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63935",
    "datePublished": "2026-07-19T14:55:33.321Z",
    "dateReserved": "2026-07-19T07:54:57.022Z",
    "dateUpdated": "2026-07-19T14:55:33.321Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-63935",
      "date": "2026-07-21",
      "epss": "0.00189",
      "percentile": "0.08779"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-63935\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-19T16:17:11.987\",\"lastModified\":\"2026-07-19T16:17:11.987\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niio: adc: nxp-sar-adc: fix division by zero in write_raw\\n\\nAdd a validation check for the sampling frequency value before using it\\nas a divisor. A user writing zero or a negative value to the\\nsampling_frequency sysfs attribute triggers a division by zero in the\\nkernel.\\n\\nAlso prevent unsigned integer underflow when the computed cycle count is\\nsmaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to\\na huge value.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/iio/adc/nxp-sar-adc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4434072a893e4864519c167947083ff3e4cc2d95\",\"lessThan\":\"cb6ea15e7d3c7518f806975a06b7d4c0a26402ea\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4434072a893e4864519c167947083ff3e4cc2d95\",\"lessThan\":\"a9aba21a539c668a66b58eeb08ad3909e5a54c2a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/iio/adc/nxp-sar-adc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"7.0\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"7.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.12\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a9aba21a539c668a66b58eeb08ad3909e5a54c2a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cb6ea15e7d3c7518f806975a06b7d4c0a26402ea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T15:07:41+00:00",
      "cve": "CVE-2026-63935",
      "id": "CVE-2026-63935",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iio: adc: nxp-sar-adc: fix division by zero in write_raw",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63935.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.